YouTube isn't only for uploading videos - you can subscribe to the video output of various organisations. I find it useful to subscribe to and watch
UK Parliament:
Parliament: http://www.youtube.com/user/UKParliament
10 Downing Street: http://www.youtube.com/user/DowningSt
US Congress:
Rollcall: http://www.youtube.com/user/RollCallNewspaper
The Hill: http://www.youtube.com/user/thehilldotcom
Speaker of the House of Representatives: http://www.youtube.com/user/NancyPelosi
Leader of the House of Representatives: http://www.youtube.com/user/LeaderHoyer
House of Representatives: http://www.youtube.com/user/househub
Senate: http://www.youtube.com/user/senatehub
President Obama: http://www.youtube.com/user/BarackObamadotcom